1.
Culturele Veranderingen in Nederland 2002 - CV'02 ; Cultural changes in the Netherlands 2002 - CV'02
2.
3.
4.
5.
Scheiding in Nederland 1998 - SIN'98 ; Divorce in the Netherlands 1998 - SIN'98
Police volunteers in the Netherlands:a study on policy and practice
Entrepreneurship and Role Models
L'érosion de la biodiversité : Les poissons. Partie C - Chapitres 6-9 (pages 184-306 + annexes)
Unverheiratete Paare und ihre Basismodelle
Productivity growth, R&D and the rôle of international collaborative agreements: some évidence for Belgian manufacturing companies